Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 70mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10
The AirTAC SAIJ125X70-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 70 mm travel back by up to 10 mm, creating a precise 60-70 mm usable window. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks while utilizing a PT tapered port and a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during commissioning. It shares the standard extruded aluminum barrel with dual sensor grooves, operating at speeds of 30-500 mm/s. The rear adjuster acts strictly as a travel stop to fine-tune the end position, not as a lock, and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 70 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 Is Used
Machine Changeover
Dial in the 60-70 mm travel window instantly when switching product sizes on the line, avoiding the downtime of physically swapping cylinders or adding external shims.
End-Position Tuning
Fine-tune the retract stopper during commissioning to achieve exact positioning without altering your ISO 15552 mounting layout.
Heavy Forming Operations
Leverage the 6136 N thrust at 0.5 MPa for pressing and forming tasks, using the rear adjuster to compensate for mechanical wear over time.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the thrust for your heavy product changeovers, but a 160 mm bore (10053 N) is physically oversized. The 10 mm adjustment range is ideal for dialing in exact end-of-stroke positions during machine setup without changing the mounting footprint.
For a direct ISO 15552 replacement, match the 125 mm bore, 70 mm stroke, 10 mm adjustment, PT port, and SUS420J2 rod material. Note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If your process requires load holding without continuous air pressure, consider the SAIL or BSAI series instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10 FAQ
The rear adjuster screw lets you shorten the 70 mm nominal stroke by up to 10 mm, providing a usable travel window of 60 to 70 mm. It acts as a mechanical stop to set the end position and is not a lock.
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX70-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.